Feature notes:

Playlists
As of mid-January 2012, we support playlists! (see below)

Fullscreen button
Supported for when the "flash plugin" variant of our embedded player
is picked.
Support for when the "html5" variant is picked,
varies a bit across browsers.
(For example, webkit-based browsers like Safari and Chrome can fullscreen).

Captions/Subtitles work
If you upload files in the simple
SubRip
format (suffix ".srt"), we will pair them with the video files.
We'll even try to autodetect a "label" when there are 2+ .srt files.
So for example, if you upload a file named:myvideo.avi
you can upload accompanying files named:myvideo.en.srtmyvideo.fr.srt
for an english and french translation of captioning.

How to embed and options:

You can see our new
permalink-style
embed codes with our new video player.
Click the "Play" icon (to get the video playing)
Mouseover the video -- in the upper left corner, you will see a "Share Video" overlay
(image looks like

)
that you can click to get the (iframe-based) embed code.
For more kinds of embed examples,
you can click the image overlay in the upper left for "Embedding Examples and Help"
(image looks like

).
Some sample ways to customize the behaviour of the "embed" urls,
used within the embed code above, follow.

Embeds a video item.
If the item contains 2+ playable uploaded files, this embeds
all of the files within the item by default, sorted "naturally"
(mostly alphabetically, via our backend PHP code):

Embed a single specific video file for item with 2+
video files:
Notice you use the name of the "original" video file that was uploaded
(and we figure out what additional formats we were able to
transcode/"derive"
from and then figure out what the video player can handle).

NOTE: using a *different* item with 2+ video files, to show
specific single file usage...